Improvement in feeding-mechanism tor sewing-machines



. 2 Sheets-Sheet 1. H. LOMAX.

Sewing Machine.

Patented Oct. 19, 1869.

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2 SheetsSheet 2.

H. 'LOMAX.

Sewing Machine.

Patented Oct. 19, 1869.

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ifinited $131135 HENRY LOMA X, OF OVER DARWENJ GREAT BRITAIN;

Letters Patent N 96,017, dated October I9, 1869.

IMPROVEMENT IN-PEEDING-MECHANISM FOR. SEWING-MACHINES.

The Schedu1e referred to in th ese Letters Patent and making part of the same To all who-m it may concern: Be it known that I, HENRY Loamx, of Over Darwen, in the county of Lancaster, Kingdom of Great Britain and Ireland, have invented certain new and useful Improvements in the Construction of Sewing- Machines, or Machines Used for theSewing of \Voollen, Cotton, Silk, or other Fabrics, or in the Making of Garments or Parts of Garments therefrom, or other like work and I do hereby declare that the following is a full, clear, and exact description of the same, ref-I erence being had to the accompanying drawings, and to the letters of reference marked thereon.

This invention relates to an improned construction of those parts of the sewing-machine which, press and .move the. material operated upon by means of what is usually termed a presser-foot.

- I employ a presser-foot of a novel and improved construct-ion, consisting of two. part's-'an outer frame, and an inner foot that presses and moves the material-the whole being constructed and arranged ashereinafter more particularly described, and shown in the annexed drawings. V In order that the nature'and object of my invention, and the means of performing it may be distinctly understood, I wfll now proceed particularly to describe the same, and I have hereunto annexed a sheet of drawings, illustrative thereof, and have marked the same with figures and letters of reference, the same letter referring to the same part in the various views,

so as to enable any person acquainted with sewingmachines, of the. character hereinafter described, to

carry my invention into eflect.

" Figiu'e 1 is a front elevation. I

s Figure 2, a side elevation in which? I A shows an eccentric, the swell to of which act-son the arm B, forcing it outward, as the arm is hinged at d to the rod, or lever O, the bottom of which forms the outer frame or skeleton-presser 1). The lower end of the arm B isconnected, by

the link (1, to the guide d, in which the lever, or"

rod E works, the bottom of which forms the inner foot F, which presses and moves the material oper- The arm B, being forced outward by the swell a, will raise the rod, or lover G and its foot 1) clear of the material being operated upon, while the rod, or lever E and guides 11 are'depressed. The swell a, on the eccentric, acts on the lever G, forcing the same outward, the lower end thereof coming in contact with the end of the set-screw H, on the rod, or lever, .1 forcing the szuneoutward, and giving the desired traverse to the internal foot for carrying or moving the material onward. The said set-screw also determines the length of stitch.

The swells (a a having passed, the lever O, on which is the outer frame or skeleton-presser, will instantly fall on the material, holding the same securely for the passage of the needle! -Another revolution of the eccentric will again raise the lever O and the outer frame, or skeleton-presser D.

The lever E, being depressed and forced outward, at the same moment, moves forward the material, which, it will be seen, is thus never left loose on the bed-plate of the machine, because, as one "foot or presser is raised, the other is depressed. This prevents puckering, or uneven work.

At J is shown a spring for returning the lever E, as soon as the swell on the eccentric has passed.

K, fig. 3, is a spiral spring, for raising the internal foot-presser F clear of the material, as soon as its traverse is completed. L is a spiral spring, for depressing the lever O and .its.outer frame, or skeleton-presser, as soon as the swell of the eccentric is passed.

The levers E G are jointed or hinged, as shown at M, and are connected withthe lever O by means of the link N.

I Figure 3 shows, in detail, the levers and pressers.

Figures 4, 5, and 6, are plan views of the under face of the internal and external pressers.

The compound'presser, constructedand arranged as above described, may be used with, or without an under feed motion.

At Figures 7 and 8 is shown another arrangement of levers for actuating my compound presser.

A is theeccentric, the swell a on which acts'on the arm B, forcing it outward,'the projection b acting on the end of the set-screw H.

The loop through which the set-screw works is connected with the lever O, on which is the outer 'presser D connection with an under feed.

Motion may he imparted to the eccentric by means of a treadle or driving-band and pulley, actuating the shaft It, on which the eccentric is placed, the latter also giving motion to the needle-bar and needle S. These parts are old and well understood, and 1 do not-lay any claim thereto; but

What I do claim, and'believe to be new, is-

l. The combination, with the bars carrying the feet D F, of levers B d, operated by a cam, A, or its equivalent, so that one foot shall be depressed, and the other simultaneously elevated, by the movement of the levers, substantially as set forth.

2. The feet E D, rods 0 E, and lever G, in combination with the levers B d, cam A, and set-screw H, or their equivalents.

HENRY LOMAX. 

